Did Charles VIII have six toes?

Where the story comes from
Fashion did change around his reign: the long pointed poulaine shoe of the late Middle Ages gave way to a broad, blunt, almost duck-billed shape that stayed in fashion for decades. That is a real and documented shift. The explanation that it happened to accommodate one king’s polydactyly is a later gloss on it, and it is the kind of tidy causal story historians are trained to distrust.
Charles was also described by contemporaries as small, physically unimpressive and somewhat awkward — the Venetian ambassador was famously unkind about him. Once a ruler has that reputation, physical oddities attach themselves to it easily.
What could settle it
His remains. He was buried at Saint-Denis, the royal necropolis, where the graves were opened and emptied during the Revolution and the contents thrown into a common pit. Whatever his feet could have told us went in with them. So the answer here is permanently unavailable, which is why the story survives: nothing can kill it.
Why I keep the page anyway
Because people arrive having heard it, and they deserve better than either a flat repetition or a flat dismissal. The useful version is: the shoe fashion is real, the six toes are a tradition, and the king himself is worth knowing about for reasons that are not his feet — he was born and died in this building, and the way he died is far stranger than the toes.
If a guide states the six toes as fact, that is a reasonable cue about the rest of the commentary. The château’s own included guided visits, described on this page, are careful about this sort of thing.
What there is to book
Not the entrance ticket — that is bought at the château’s own desk when you arrive. What is bookable is the guiding, and the day trips that include entry to Amboise along with the other Loire châteaux.
Frequently asked questions
So did he or didn't he?
Unknown, and now unknowable — his remains were destroyed at Saint-Denis during the Revolution.
Were square shoes really invented for him?
The fashion change is real; the explanation is a later story attached to it.
What is actually worth knowing about Charles VIII?
That he was born and died in this château, at twenty-seven: his page.